13D Filing: Walgreens Boots Alliance, Inc. Discloses Update to Amerisourcebergen Corp (ABC) Holding

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

SCHEDULE
13D/A

Under the Securities Exchange Act of 1934

(Amendment No. 2)*

AMERISOURCEBERGEN CORPORATION

(Name of Issuer)

Common
Stock, par value $0.01 per share

(Title of Class of Securities)

03073E105

(CUSIP Number)

Jan Stern Reed

Senior
Vice President, General Counsel and Corporate Secretary

Walgreens Boots Alliance, Inc.

108 Wilmot Road

Deerfield, Illinois 60015

(847) 315-2500

With
a copy to:

Alan L. Dye, Esq.

Hogan Lovells US LLP

555
Thirteenth Street, N.W.

Washington, D.C. 20004

(202) 637-5600 (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

January 18, 2016

(Date of Event Which Requires Filing of This Statement)

If the filing person has
previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following
box.  ¨

Note: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See §240.13d-7 for
other parties to whom copies are to be sent.

The information required on the remainder of this cover page shall not be
deemed to be filed for the purpose of Section 18 of the Securities Exchange Act of 1934 (Act) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act
(however, see the Notes).

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This Amendment No. 2 to Schedule 13D (this Amendment No. 2) amends and supplements
the Schedule 13D (the Schedule 13D) relating to the common stock, $0.01 par value per share (Common Stock), of AmerisourceBergen Corporation, a Delaware corporation (the Issuer),
originally filed with the Securities and Exchange Commission (the SEC) on April 9, 2014, as amended by Amendment No. 1 thereto filed with the SEC on January 16, 2015. Terms used but not defined in this Amendment
No. 2 have the respective meanings given to such terms in the original Schedule 13D, as amended by Amendment No. 1 thereto.

Explanatory Note

This Amendment
No. 2 is being filed because, pursuant to Rule 13d-3(d) under the Exchange Act, shares underlying warrants that become exercisable within 60 days are deemed beneficially owned for purposes of Section 13(d) of the Exchange Act and, as
previously disclosed in the Schedule 13D, Warrant 1 will by its terms become exercisable in March 2016. Accordingly, pursuant to Rule 13d-3(d) under the Exchange Act, certain of the Reporting Persons may, as disclosed herein, be deemed to be the
beneficial owner of the shares of Common Stock underlying Warrant 1 (in addition to their previously-reported beneficial ownership) as of the filing of this Amendment No. 2. This Amendment No. 2 also reflects the completion of an internal
reorganization of certain subsidiaries of Walgreens Boots Alliance, Inc., a Delaware corporation (WBA), and the transfer of certain securities of the Issuer between wholly-owned subsidiaries of WBA in accordance with the Framework
Agreement and related agreements.

Item 2 is amended and supplemented as follows:

This Amendment No. 2 is being filed by: (i) Walgreens Boots Alliance Holdings LLC, a Delaware limited liability company (WBA
Holdings) (f/k/a WAB Holdings LLC); (ii) Walgreens Pharmacy Strategies, LLC, an Illinois limited liability company (WPS); (iii) Bond Drug Company of Illinois, LLC, an Illinois limited liability company
(Bond Drug); (iv) Walgreen Eastern Co., Inc., a New York corporation (WEC); (v) Walgreen Arizona Drug Co., an Arizona corporation (WADC); (vi) Walgreen Hastings Co., a Nebraska
corporation (WHC); (vii) Walgreen Co., an Illinois corporation (Walgreen); (viii) Alliance Boots Luxembourg S.à r.l, a Luxembourg société à responsabilité
limitée (limited liability company) (AB Luxembourg); (ix) Alliance Boots Holdings Limited, a private limited liability company organized under the laws of England and Wales (AB Holdings);
(x) AB Acquisitions UK Holdco 7 Limited, a private limited liability company organized under the laws of England and Wales (AB UK Holdco 7); (xi) Superior Acquisitions Limited, a private limited liability company
organized under the laws of England and Wales (Superior Acquisitions) (f/k/a AB Acquisitions Limited); (xii) Alliance Boots International Limited, a private limited liability company organized under the laws of England and
Wales (AB International); (xiii) Alliance Boots Limited, a private limited liability company organized under the laws of England and Wales (AB Limited); (xiv) AB Acquisitions UK Topco Limited, a
private limited liability company organized under the laws of England and Wales (AB UK Topco); (xv) AB Acquisitions Luxco 1 S.à r.l., a Luxembourg société à responsabilité
limitée (limited liability company) (AB Luxco 1); (xvi) Alliance Boots GmbH, a Swiss Gesellschaft mit beschränkter Haftung (limited liability company) (Alliance Boots);
(xvii) Walgreen Swiss International GmbH, a Swiss Gesellschaft mit beschränkter Haftung (limited liability company) (Walgreen Swiss); (xviii) Superior Holdings Limited, a private limited liability company
organized under the laws of England and Wales (Superior) (f/k/a Ontario Holdings WBA Limited); (xix) Walgreen International S.à r.l., a Luxembourg société à responsabilité
limitée (limited liability company) (Walgreen International); (xx) Superior Bermuda GP, a Bermuda General Partnership (Superior Bermuda); (xxi) Superior Luxco 3 S.à r.l., a Luxembourg
société à responsabilité limitée (limited liability company) (Superior Luxco 3); (xxii) Walgreens Boots Alliance Scottish LP, a private limited partnership organized under the laws of
Scotland (WBA Scottish); (xxiii) WBA 1 Scottish LLP, a private limited liability partnership organized under the laws of Scotland (WBA Scottish 1); (xxiv) Superior Luxco 2 S.à r.l., a Luxembourg
société à responsabilité limitée (limited liability company) (Superior Luxco 2); (xxv) Superior Luxco 1 S.à r.l., a Luxembourg société à
responsabilité limitée (limited liability company) (Superior Luxco 1); (xxvi) Walgreen Investments Luxembourg SCS, a Luxembourg société en commandite simple (limited partnership)
(Walgreen Investments Lux); (xxvii) Walgreen International Investments LLC, a Delaware limited liability company (Walgreen International Investments); (xxviii) WBA Investments, Inc., a Delaware
corporation (WBA Investments); (xxix) Walgreen Investments Co, a Delaware corporation (WIC); and (xxx) WBA. WBA Holdings, WPS, Bond Drug, WEC, WADC, WHC, Walgreen, AB Luxembourg, AB Holdings, AB UK
Holdco, Superior Acquisitions, AB International, AB Limited, AB UK Topco, AB Luxco 1, Alliance Boots, Walgreen Swiss, Superior, Walgreen International, Superior Bermuda, Superior Luxco 3, WBA Scottish, WBA Scottish 1, Superior Luxco 2, Superior
Luxco 1, Walgreen Investments Lux, Walgreen International Investments, WBA Investments, WIC and WBA are collectively referred to as the Reporting Persons.

WBA Holdings was formed solely for the purpose of investing in the Issuer. All of the outstanding shares of Common Stock reported as beneficially owned by any
Reporting Person in this Schedule 13D are held of record by WBA Holdings. In addition, WBA Holdings is the holder of Warrant 1 (as defined in the Schedule 13D) and Warrant 2 (as defined in the Schedule 13D) as of the filing of this Amendment
No. 2. WBA Holdings is a direct wholly-owned subsidiary of WPS. WPS is a direct wholly-owned subsidiary of Bond Drug. Bond Drug is a direct wholly-owned subsidiary of WEC. WEC is a direct wholly-owned subsidiary of WADC. WADC is a direct
wholly-owned subsidiary of WHC. WHC is a direct wholly-owned subsidiary of Walgreen. Walgreen is a direct wholly-owned subsidiary of WBA. WBA, together with its subsidiaries, including the Reporting Persons, is a global pharmacy-led, health and
wellbeing enterprise.

As a result of the completion of an internal reorganization of certain subsidiaries of WBA and the transfer of
certain securities of the Issuer between wholly-owned subsidiaries of WBA in accordance with the Framework Agreement and related agreements (collectively, the internal reorganization) subsequent to the filing of Amendment No. 1,
each of AB Luxembourg, AB Holdings, AB UK Holdco, Superior Acquisitions, AB International, AB Limited, AB UK Topco, AB Luxco 1, Alliance Boots, Walgreen Swiss, Superior, Walgreen International, Superior Bermuda, Superior Luxco 3, WBA Scottish, WBA
Scottish 1, Superior Luxco 2, Superior Luxco 1, Walgreen Investments Lux, Walgreen International Investments, WBA Investments and WIC do not beneficially own any of the shares of Common Stock or Warrants held by WBA Holdings as of the filing of this
Amendment No. 2 and, accordingly, will not be Reporting Persons in future amendments to this Schedule 13D. In connection with the internal reorganization, the prior interest of AB Luxembourg in WBA Holdings was redeemed by WBA Holdings, WPS
exercised the Post-Second Step Call Option (as defined in the Transaction Rights Agreement) and acquired the portion of the Warrants it did not already own, and WPS contributed the Warrants to WBA Holdings, its wholly-owned direct subsidiary. AB
Luxembourg is jointly-owned directly by AB Holdings and Walgreen International. AB Holdings is a direct wholly-owned subsidiary of AB UK Holdco 7. AB UK Holdco 7 is a direct wholly-owned subsidiary of Superior
Acquisitions. Superior Acquisitions is a direct wholly-owned subsidiary of AB International. AB International is jointly-owned directly by AB Limited and Superior. AB Limited is a direct wholly-owned subsidiary of AB UK Topco. AB UK Topco is a
direct wholly-owned subsidiary of AB Luxco 1. AB Luxco 1 is a direct wholly-owned subsidiary of Alliance Boots. Alliance Boots is jointly-owned directly by Walgreen Swiss and Superior. Walgreen Swiss is a direct wholly-owned subsidiary of Superior.
Superior is a direct wholly-owned subsidiary of Walgreen International. Walgreen International is a direct wholly-owned subsidiary of Superior Bermuda. Superior Bermuda is jointly-owned directly by Superior Luxco 3 and WBA Scottish. Superior Luxco 3
is a direct wholly-owned subsidiary of WBA Scottish. WBA Scottish is jointly-owned directly by WBA 1 Scottish, Superior Luxco 1 and Superior Luxco 2. WBA 1 Scottish is jointly-owned directly by Superior Luxco 1 and Superior Luxco 2. Superior Luxco 2
is a direct wholly-owned subsidiary of Superior Luxco 1. Superior Luxco 1 is a direct wholly-owned subsidiary of Walgreen Investments Lux. Walgreen Investments Lux is jointly-owned directly by WBA Investments and Walgreen International Investments.
Walgreen International Investments is a direct wholly-owned subsidiary of WBA Investments. WBA Investments is a direct wholly-owned subsidiary of WBA. WIC is a direct wholly-owned subsidiary of Walgreen.

The principal business office of WBA Holdings, WPS, Bond Drug, WEC, WADC, WHC, Walgreen International Investments, WBA Investments, Walgreen, WIC and WBA is:

c/o Walgreens Boots Alliance, Inc.

108 Wilmot Road

Deerfield,
Illinois 60015.

The principal business office of AB Luxembourg and AB Luxco 1 is:

59, rue de Rollingergrund

Luxembourg L-2440

Luxembourg.

The principal business office of AB Holdings, AB UK Holdco 7, Superior Acquisitions, AB International, AB Limited, AB UK Topco and Superior is:

Sedley Place, 4th Floor

361
Oxford Street

London W1C 2JL

United Kingdom.

The principal business office of
Alliance Boots and Walgreen Swiss is:

Untermattweg 8

3027 Bern

Switzerland.

The principal business office of Walgreen International, Superior Luxco 3, Superior Luxco 2 and Superior Luxco 1
is:

46A, Avenue J.F. Kennedy

Luxembourg, L-1855

Luxembourg.

The principal business office of Superior Bermuda is:

3rd floor, Par La Ville Place

14
Par-la-Ville Rd

Hamilton HM 08, Bermuda.

The principal business office of WBA Scottish and WBA Scottish 1 is:

50 Lothian Road

Festival Square

Edinburgh EH3 9WJ.

The principal business
office of Walgreen Investments Lux is:

2, Rue Joseph Hackin

L 1746 Luxembourg City

Luxembourg.

Attached as Annex A hereto and incorporated herein by reference is a list containing the (a) name, (b) residence or business address,
(c) present principal occupation or employment and the name, principal business address of any corporation or other organization in which such employment is conducted, and (d) citizenship, in each case, of each director and executive
officer of the Reporting Persons, as applicable.

During the last five years, each Reporting Person and, to the knowledge of such Reporting Person, each
person listed in Annex A with respect to such Reporting Person, has not been convicted in any criminal proceeding (excluding traffic violations or similar misdemeanors) and has not been a party to a civil proceeding of any judicial or administrative
body of competent jurisdiction as a result of which such person was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding of
any violation with respect to such laws.

Item 5 is hereby amended by adding the following:

(a) and (b). The ownership percentages set forth below are based on 205,632,943 shares of Common Stock outstanding as of October 31, 2015, as reported by
the Issuer on its Annual Report on Form 10-K for the fiscal year ended September 30, 2015, filed by the Issuer with the SEC on November 24, 2015, plus, where applicable, the number of shares of Common Stock issuable upon the exercise of
warrants that may be deemed to be beneficially owned by certain of the Reporting Persons that are exercisable within 60 days of the date of this Amendment No. 2, which shares are deemed to be outstanding for the purpose of computing the
percentage of outstanding shares beneficially owned by the Reporting Person in accordance with Exchange Act Rule 13d-3(d)(1)(i).

WBA Holdings may be
deemed to beneficially own 11,461,043 outstanding shares of Common Stock. In addition, WBA Holdings is the holder of Warrant 1, which, as previously disclosed in the Schedule 13D, will by its terms become exercisable in March 2016. Therefore,
pursuant to Rule 13d-3(d) under the Exchange Act, the 22,696,912 shares of Common Stock underlying Warrant 1 may be deemed to be beneficially owned by WBA Holdings as of the filing of this Amendment No. 2. As a result, WBA Holdings may be
deemed to beneficially own an aggregate of 34,157,955 shares of Common Stock (representing approximately 14.96% of the total number of shares of Common Stock outstanding, assuming the exercise in full of Warrant 1) as of the filing of this Amendment
No. 2.

By virtue of relationships reported in Item 2, each of WPS, Bond Drug, WEC, WADC, WHC, Walgreen and WBA may be deemed to share the power
to vote or direct to vote or to direct the voting of, and to dispose of or to direct the disposition of and, accordingly, may be deemed to beneficially own the 11,461,043 outstanding shares of Common Stock held by WBA Holdings and the 22,696,912
shares of Common Stock underlying Warrant 1 held by WBA Holdings. As a result of the foregoing, each of WPS, Bond Drug, WEC, WADC, WHC, Walgreen and WBA may be deemed to beneficially own an aggregate of 34,157,955 shares of Common Stock
(representing approximately 14.96% of the total number of shares of Common Stock outstanding, assuming the exercise in full of Warrant 1) as of the filing of this Amendment No. 2.

As a result of the completion of the internal reorganization, each of AB Luxembourg, AB Holdings, AB UK Holdco, Superior Acquisitions, AB International, AB
Limited, AB UK Topco, AB Luxco 1, Alliance Boots, Walgreen Swiss, Superior, Walgreen International, Superior Bermuda, Superior Luxco 3, WBA Scottish, WBA Scottish 1, Superior Luxco 2, Superior Luxco 1, Walgreen Investments Lux, Walgreen
International Investments, WBA Investments and WIC no longer beneficially own any shares of Common Stock of the Issuer as of the filing of this Amendment No. 2.

Neither the filing of this Schedule 13D nor any of its contents shall be deemed to constitute an admission by any
Reporting Person (other than WBA Holdings) that it is the beneficial owner of any shares of Common Stock for purposes of Section 13(d) of the Exchange Act, or for any other purpose, and such beneficial ownership is expressly disclaimed.

(c), (d) and (e). The information set forth in the third paragraph of Item 2 of this Amendment No. 2 is incorporated herein by reference. With
respect to each Reporting Person, such Reporting Person and, to the knowledge of such Reporting Person, the persons listed in Annex A hereto with respect to such Reporting Person, have not otherwise effected any transaction in shares of Common Stock
in the past 60 days.

Other than WBA Holdings, WPS, Bond Drug, WEC, WADC, WHC, Walgreen and WBA and the persons listed in Annex A hereto with respect
thereto, no other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of the shares of Common Stock covered by this Schedule 13D.

SIGNATURES

After reasonable inquiry and to the best of the undersigneds knowledge and belief, the undersigned certifies that the information set forth in this
statement is true, complete and correct.

Dated: January 25, 2016

ANNEX A

WALGREENS BOOTS ALLIANCE HOLDINGS LLC

MANAGERS

Unless otherwise noted, the
business address for each person listed below is c/o Walgreens Boots Alliance, Inc., 108 Wilmot Road, Deerfield, Illinois 60015.

Jason Dubinsky

Citizenship: United States

Present Principal
Occupation: Senior Vice President, CFO Planning and Central Operations, Walgreens Boots Alliance, Inc.

Gordon Farquhar

Citizenship: United Kingdom

Business Address: Sedley Place, 4th
Floor, 361 Oxford Street, London W1C 2JL, United Kingdom

Present Principal Occupation: Managing Director, Boots International

Dan Morrell

Citizenship: United States

Present Principal Occupation: Treasury Department, Walgreens Boots Alliance, Inc.

Marco Pagni

Citizenship: United Kingdom

Business Address: Sedley Place, 4^th Floor, 361 Oxford Street, London W1C 2JL, United Kingdom

Present Principal Occupation: Executive Vice President, Global Chief Legal and Administrative Officer, Walgreens Boots Alliance, Inc.

WALGREENS PHARMACY STRATEGIES, LLC

OFFICERS

Unless otherwise noted, the
business address for each person listed below is c/o Walgreens Boots Alliance, Inc., 108 Wilmot Road, Deerfield, Illinois 60015. To the knowledge of WBA, all officers listed below are United States citizens.

Richard Ashworth, President

Present Principal
Occupation: President, Pharmacy and Retail Operations, Walgreen Co.

Linda Filler, Vice President

Present Principal Occupation: President, Retail Products and Chief Merchandising and Marketing Officer, Walgreen Co.

Amelia Legutki, Vice President

Present Principal
Occupation: Director/Tax Counsel and Assistant Secretary, Walgreen Co.

Jan Stern Reed, Vice President and Secretary

Present Principal Occupation: Senior Vice President, General Counsel and Corporate Secretary, Walgreens Boots Alliance, Inc.

Alan Nielsen, Treasurer

Present Principal Occupation:
Senior Vice President, Chief Financial Officer and Treasurer, Walgreen Co.

Dan Morrell, Assistant Treasurer

Present Principal Occupation: Treasury Department, Walgreens Boots Alliance, Inc.

Collin Smyser, Assistant Secretary

Present Principal
Occupation: Vice President and Assistant Corporate Secretary, Walgreens Boots Alliance, Inc.

BOND DRUG COMPANY OF ILLINOIS, LLC

MANAGERS

Unless otherwise noted, the
business address for each person listed below is c/o Walgreens Boots Alliance, Inc., 108 Wilmot Road, Deerfield, Illinois 60015. To the knowledge of WBA, all managers listed below are United States citizens except for Alexander Gourlay, who is a
citizen of the United Kingdom.

Richard Ashworth

Present Principal Occupation: President, Pharmacy and Retail Operations, Walgreen Co.

Alexander Gourlay

Present Principal Occupation:
Executive Vice President, Walgreens Boots Alliance, Inc. and President of Walgreen Co.

Alan Nielsen

Present Principal Occupation: Senior Vice President, Chief Financial Officer and Treasurer, Walgreen Co.

OFFICERS

Unless otherwise noted, the
business address for each person listed below is c/o Walgreens Boots Alliance, Inc., 108 Wilmot Road, Deerfield, Illinois 60015. To the knowledge of WBA, all officers listed below are United States citizens.

Mark A. Wagner, President

Present Principal Occupation:
President, Business Operations, Walgreen Co.

Amelia Legutki, Vice President

Present Principal Occupation: Director/Tax Counsel and Assistant Secretary, Walgreen Co.

Jan Stern Reed, Vice President & Secretary

Present Principal Occupation: Senior Vice President, General Counsel and Corporate Secretary, Walgreens Boots Alliance, Inc.

Alan Nielsen, Treasurer

Present Principal Occupation:
Senior Vice President, Chief Financial Officer and Treasurer, Walgreen Co.

Dan Morrell, Assistant Treasurer

Present Principal Occupation: Treasury Department, Walgreens Boots Alliance, Inc.

Collin Smyser, Assistant Secretary

Present Principal
Occupation: Vice President and Assistant Corporate Secretary, Walgreens Boots Alliance, Inc.

WALGREEN EASTERN CO., INC.

DIRECTORS

Unless otherwise noted, the
business address for each person listed below is c/o Walgreens Boots Alliance, Inc., 108 Wilmot Road, Deerfield, Illinois 60015. To the knowledge of WBA, all directors listed below are United States citizens except for Alexander Gourlay, who is a
citizen of the United Kingdom.

Richard Ashworth

Present Principal Occupation: President, Pharmacy and Retail Operations, Walgreen Co.

Alexander Gourlay

Present Principal Occupation:
Executive Vice President, Walgreens Boots Alliance, Inc. and President of Walgreen Co.

Alan Nielsen

Present Principal Occupation: Senior Vice President, Chief Financial Officer and Treasurer, Walgreen Co.

OFFICERS

Unless otherwise noted, the
business address for each person listed below is c/o Walgreens Boots Alliance, Inc., 108 Wilmot Road, Deerfield, Illinois 60015. To the knowledge of WBA, all officers listed below are United States citizens.

Richard Ashworth

Present Principal Occupation:
President, Pharmacy and Retail Operations, Walgreen Co.

Amelia Legutki, Vice President

Present Principal Occupation: Director/Tax Counsel and Assistant Secretary, Walgreen Co.

Jan Stern Reed, Vice President & Secretary

Present Principal Occupation: Senior Vice President, General Counsel and Corporate Secretary, Walgreens Boots Alliance, Inc.

Alan Nielsen, Treasurer

Present Principal Occupation:
Senior Vice President, Chief Financial Officer and Treasurer, Walgreen Co.

Dan Morrell, Assistant Treasurer

Present Principal Occupation: Treasury Department, Walgreens Boots Alliance, Inc.

Collin Smyser, Assistant Secretary

Present Principal
Occupation: Vice President and Assistant Corporate Secretary, Walgreens Boots Alliance, Inc.

WALGREEN ARIZONA DRUG CO.

DIRECTORS

Unless otherwise noted, the
business address for each person listed below is c/o Walgreens Boots Alliance, Inc., 108 Wilmot Road, Deerfield, Illinois 60015. To the knowledge of WBA, all directors listed below are United States citizens except for Alexander Gourlay, who is a
citizen of the United Kingdom.

Richard Ashworth

Present Principal Occupation: President, Pharmacy and Retail Operations, Walgreen Co.

Alexander Gourlay

Present Principal Occupation:
Executive Vice President, Walgreens Boots Alliance, Inc. and President of Walgreen Co.

Alan Nielsen

Present Principal Occupation: Senior Vice President, Chief Financial Officer and Treasurer, Walgreen Co.

OFFICERS

Unless otherwise noted, the
business address for each person listed below is c/o Walgreens Boots Alliance, Inc., 108 Wilmot Road, Deerfield, Illinois 60015. To the knowledge of WBA, all officers listed below are United States citizens.

Richard Ashworth, President

Present Principal
Occupation: President, Pharmacy and Retail Operations, Walgreen Co.

Linda Filler, Vice President

Present Principal Occupation: President, Retail Products and Chief Merchandising and Marketing Officer, Walgreen Co.

Amelia Legutki, Vice President

Present Principal
Occupation: Director/Tax Counsel and Assistant Secretary, Walgreen Co.

Jan Stern Reed, Vice President and Secretary

Present Principal Occupation: Senior Vice President, General Counsel and Corporate Secretary, Walgreens Boots Alliance, Inc.

Alan Nielsen, Treasurer

Present Principal Occupation:
Senior Vice President, Chief Financial Officer and Treasurer, Walgreen Co.

Dan Morrell, Assistant Treasurer

Present Principal Occupation: Treasury Department, Walgreens Boots Alliance, Inc.

Collin Smyser, Assistant Secretary

Present Principal
Occupation: Vice President and Assistant Corporate Secretary, Walgreens Boots Alliance, Inc.

WALGREEN HASTINGS CO.

DIRECTORS

Unless otherwise noted, the
business address for each person listed below is c/o Walgreens Boots Alliance, Inc., 108 Wilmot Road, Deerfield, Illinois 60015. To the knowledge of WBA, all directors listed below are United States citizens except for Alexander Gourlay, who is a
citizen of the United Kingdom.

Richard Ashworth

Present Principal Occupation: President, Pharmacy and Retail Operations, Walgreen Co.

Alexander Gourlay

Present Principal Occupation:
Executive Vice President, Walgreens Boots Alliance, Inc. and President of Walgreen Co.

Alan Nielsen

Present Principal Occupation: Senior Vice President, Chief Financial Officer and Treasurer, Walgreen Co.

OFFICERS

Unless otherwise noted, the
business address for each person listed below is c/o Walgreens Boots Alliance, Inc., 108 Wilmot Road, Deerfield, Illinois 60015. To the knowledge of WBA, all officers listed below are United States citizens.

Richard Ashworth, President

Present Principal
Occupation: President, Pharmacy and Retail Operations, Walgreen Co.

Linda Filler, Vice President

Present Principal Occupation: President, Retail Products and Chief Merchandising and Marketing Officer, Walgreen Co.

Amelia Legutki, Vice President

Present Principal
Occupation: Director/Tax Counsel and Assistant Secretary, Walgreen Co.

Jan Stern Reed, Vice President and Secretary

Present Principal Occupation: Senior Vice President, General Counsel and Corporate Secretary, Walgreens Boots Alliance, Inc.

Alan Nielsen, Treasurer

Present Principal Occupation:
Senior Vice President, Chief Financial Officer and Treasurer, Walgreen Co.

Dan Morrell, Assistant Treasurer

Present Principal Occupation: Treasury Department, Walgreens Boots Alliance, Inc.

Collin Smyser, Assistant Secretary

Present Principal
Occupation: Vice President and Assistant Corporate Secretary, Walgreens Boots Alliance, Inc.

WALGREEN CO.

DIRECTORS

Unless otherwise noted, the
business address for each person listed below is c/o Walgreens Boots Alliance, Inc., 108 Wilmot Road, Deerfield, Illinois 60015. To the knowledge of WBA, all directors listed below are United States citizens except for Alexander Gourlay, who is a
citizen of the United Kingdom.

Richard Ashworth

Present Principal Occupation: President, Pharmacy and Retail Operations, Walgreen Co.

Alexander Gourlay

Present Principal Occupation:
Executive Vice President, Walgreens Boots Alliance, Inc. and President of Walgreen Co.

Mark A. Wagner

Present Principal Occupation: President, Business Operations, Walgreen Co.

OFFICERS

Unless otherwise noted, the
business address for each person listed below is c/o Walgreens Boots Alliance, Inc., 108 Wilmot Road, Deerfield, Illinois 60015. To the knowledge of WBA, all officers listed below are United States citizens, except for Alexander Gourlay, who is a
citizen of the United Kingdom.

Alexander Gourlay, President and Chief Executive Officer

Present Principal Occupation: Executive Vice President of Walgreens Boots Alliance, Inc. and President of Walgreen Co.

Richard Ashworth, President

Present Principal
Occupation: President, Pharmacy and Retail Operations, Walgreen Co.

Linda Filler, President

Present Principal Occupation: President, Retail Products and Chief Merchandising and Marketing Officer, Walgreen Co.

Mark A. Wagner, President

Present Principal Occupation:
President, Business Operations, Walgreen Co.

Abhi Dhar, Senior Vice President

Present Principal Occupation: Senior Vice President, Chief Information and Digital Officer, Walgreen Co.

Bradley M. Fluegel, Senior Vice President

Present
Principal Occupation: Senior Vice President, Chief Healthcare Commercial Market Development Officer, Walgreen Co.

Alan Nielsen, Senior Vice President

Present Principal Occupation: Senior Vice President, Chief Financial Officer and Treasurer, Walgreen Co.

Jan Stern Reed, Senior Vice President

Present Principal
Occupation: Senior Vice President, General Counsel and Secretary, Walgreens Boots Alliance, Inc.

Stevens J. Sainte-Rose, Senior Vice President

Principal Present Occupation: Senior Vice President and Chief Human Resources Officer, Walgreen Co.

Reuben E. Slone, Senior Vice President

Present Principal
Occupation: Senior Vice President, Supply Chain, Retail and Pharmacy Renewal, Walgreen Co.

Jason Dubinsky, Assistant Treasurer

Present Principal Occupation: Senior Vice President, CFO Planning and Central Operations, Walgreens Boots Alliance, Inc.

Amelia Legutki, Assistant Secretary

Present Principal
Occupation: Director/Tax Counsel and Assistant Secretary, Walgreen Co.

Collin Smyser, Assistant Secretary

Present Principal Occupation: Vice President and Assistant Corporate Secretary, Walgreens Boots Alliance, Inc.

ALLIANCE BOOTS LUXEMBOURG S.à r.l.

MANAGERS (GÉRANTS)

Unless otherwise noted, the business address for each person listed below is 59, rue de Rollingergrund, L-2440 Luxembourg, Luxembourg. To the knowledge of
WBA, all managers (gérants) listed below are citizens of the Federal Republic of Germany, except for Aidan Clare, who is a citizen of the Republic of Ireland.

Aidan Clare

Present Principal Occupation: Senior Vice
President and Global Treasurer, Walgreens Boots Alliance, Inc.

Stefan Lambert

Present Principal Occupation: Manager, AVEGA S.à r.l.

Wolfgang Zettel

Present Principal Occupation: Manager,
AVEGA S.à r.l.

ALLIANCE BOOTS HOLDINGS LIMITED

DIRECTORS

Unless otherwise noted, the
business address for each person listed below is Sedley Place, 4^th Floor, 361 Oxford Street, London W1C 2JL.

Aidan Clare

Present Principal Occupation: Senior Vice
President and Global Treasurer, Walgreens Boots Alliance, Inc.

Citizenship: Republic of Ireland

Martin Delve

Present Principal Occupation: Vice
President, International Controller, Walgreens Boots Alliance, Inc.

Citizenship: United Kingdom

Frank Standish

Present Principal Occupation: Vice
President, Operating Affairs, Walgreens Boots Alliance, Inc.

Citizenship: Republic of Ireland

AB ACQUISITIONS UK HOLDCO 7 LIMITED

DIRECTORS

Unless otherwise noted, the
business address for each person listed below is Sedley Place, 4^th Floor, 361 Oxford Street, London W1C 2JL.

Aidan Clare

Present Principal Occupation: Senior Vice
President and Global Treasurer, Walgreens Boots Alliance, Inc.

Citizenship: Republic of Ireland

Martin Delve

Present Principal Occupation: Vice
President, International Controller, Walgreens Boots Alliance, Inc.

Citizenship: United Kingdom

Frank Standish

Present Principal Occupation: Vice
President, Operating Affairs, Walgreens Boots Alliance, Inc.

Citizenship: Republic of Ireland

SUPERIOR ACQUISITIONS LIMITED

DIRECTORS

Unless otherwise noted, the
business address for each person listed below is Sedley Place, 4^th Floor, 361 Oxford Street, London W1C 2JL.

Aidan Clare

Present Principal Occupation: Senior Vice
President and Global Treasurer, Walgreens Boots Alliance, Inc.

Citizenship: Republic of Ireland

Martin Delve

Present Principal Occupation: Vice
President, International Controller, Walgreens Boots Alliance, Inc.

Citizenship: United Kingdom

Frank Standish

Present Principal Occupation: Vice
President, Operating Affairs, Walgreens Boots Alliance, Inc.

Citizenship: Republic of Ireland

ALLIANCE BOOTS INTERNATIONAL LIMITED

DIRECTORS

Unless otherwise noted, the
business address for each person listed below is Sedley Place, 4^th Floor, 361 Oxford Street, London W1C 2JL.

Aidan Clare

Present Principal Occupation: Senior Vice
President and Global Treasurer, Walgreens Boots Alliance, Inc.

Citizenship: Republic of Ireland

Martin Delve

Present Principal Occupation: Vice
President, International Controller, Walgreens Boots Alliance, Inc.

Citizenship: United Kingdom

Frank Standish

Present Principal Occupation: Vice
President, Operating Affairs, Walgreens Boots Alliance, Inc.

Citizenship: Republic of Ireland

ALLIANCE BOOTS LIMITED

DIRECTORS

Unless otherwise noted, the
business address for each person listed below is Sedley Place, 4^th Floor, 361 Oxford Street, London W1C 2JL.

Aidan Clare

Present Principal Occupation: Senior Vice
President and Global Treasurer, Walgreens Boots Alliance, Inc.

Citizenship: Republic of Ireland

Martin Delve

Present Principal Occupation: Vice
President, International Controller, Walgreens Boots Alliance, Inc.

Citizenship: United Kingdom

Frank Standish

Present Principal Occupation: Vice
President, Operating Affairs, Walgreens Boots Alliance, Inc.

Citizenship: Republic of Ireland

AB ACQUISITIONS UK TOPCO LIMITED

DIRECTORS

Unless otherwise noted, the
business address for each person listed below is Sedley Place, 4^th Floor, 361 Oxford Street, London W1C 2JL.

Aidan Clare

Present Principal Occupation: Senior Vice
President and Global Treasurer, Walgreens Boots Alliance, Inc.

Citizenship: Republic of Ireland

Martin Delve

Present Principal Occupation: Vice
President, International Controller, Walgreens Boots Alliance, Inc.

Citizenship: United Kingdom

Frank Standish

Present Principal Occupation: Vice
President, Operating Affairs, Walgreens Boots Alliance, Inc.

Citizenship: Republic of Ireland

AB ACQUISITIONS LUXCO 1 S.à r.l.

MANAGERS (GÉRANTS)

Unless otherwise noted, the business address for each person listed below is 59, rue de Rollinggergrund, L-2440 Luxembourg, Luxembourg. To the knowledge of
WBA, all managers (gérants) listed below are citizens of the Federal Republic of Germany, except for Aidan Clare, who is a citizen of the Republic of Ireland.

Aidan Clare

Business Address: Sedley Place, 4th Floor,
361 Oxford Street, London W1C 2JL

Present Principal Occupation: Senior Vice President and Global Treasurer, Walgreens Boots Alliance, Inc.

Stefan Lambert

Present Principal Occupation: Manager,
AVEGA S.à r.l.

Wolfgang Zettel

Present
Principal Occupation: Manager, AVEGA S.à r.l.

ALLIANCE BOOTS GmbH

DIRECTORS

John Donovan

Business Address: Untermattweg 8, 3027 Bern, Switzerland

Present
Principal Occupation: President, Walgreens Boots Alliance Development GmbH

Citizenship: United Kingdom

Frank Standish

Business Address: Sedley Place, 4^th Floor, 361 Oxford Street, London W1C 2JL, United Kingdom

Present Principal Occupation: Vice President,
Operating Affairs, Walgreens Boots Alliance, Inc.

Citizenship: Republic of Ireland

WALGREENS SWISS INTERNATIONAL GmbH

DIRECTORS

John Donovan

Business Address: Untermattweg 8, 3027 Bern, Switzerland

Present
Principal Occupation: President, Walgreens Boots Alliance Development GmbH

Citizenship: United Kingdom

Rene Gimenez

Business Address: Untermattweg 8, 3027
Bern, Switzerland

Present Principal Occupation: Director FP&A, Walgreens Boots Alliance Development GmbH

Citizenship: Italy

Frank Standish

Business Address: Sedley Place, 4^th Floor, 361 Oxford Street, London W1C 2JL, United Kingdom

Present Principal Occupation: Vice President, Operating Affairs, Walgreens Boots Alliance, Inc.

Citizenship: Republic of Ireland

SUPERIOR HOLDINGS LIMITED

DIRECTORS

Aidan Clare

Business Address: Sedley Place, 4th Floor, 361 Oxford Street, London W1C 2JL

Present Principal Occupation: Senior Vice President and Global Treasurer, Walgreens Boots Alliance, Inc.

Citizenship: Republic of Ireland

Martin Delve

Business Address: Sedley Place, 4^th Floor, 361 Oxford Street, London W1C 2JL, United Kingdom

Present Principal Occupation: Vice President, International Controller, Walgreens Boots Alliance, Inc.

Citizenship: United Kingdom

Mark Muller

Business Address: 1 Thane Road, Beeston, Nottingham NG90 1BS

Present Principal Occupation: Chief Financial officer of Boots UK & ROI, Walgreens Boots Alliance, Inc.

Citizenship: United Kingdom

Dermid Strain

Business Address: 2 The Heights, Brooklands, Weybridge, Surrey, KT13 0NY

Present Principal Occupation: Director of Finance, Pharmaceutical Wholesale, Walgreens Boots Alliance, Inc.

Citizenship: United Kingdom

WALGREEN INTERNATIONAL S.à r.l.

MANAGERS (GÉRANTS)

Unless otherwise noted, the business address for each person listed below is 46A, Avenue J.F. Kennedy, Luxembourg, L-1855, Luxembourg.

Gwenaelle Cousin

Present Principal Occupation: Team
Leader, TMF Luxembourg SA

Citizenship: France

Joseph H.
Greenberg

Business Address: c/o Walgreens Boots Alliance, Inc., 108 Wilmot Road, Deerfield, Illinois 60015

Present Principal Occupation: Vice President, Global M&A-Legal, Walgreens Boots Alliance, Inc.

Citizenship: United States

Jack Mudde

Present Principal Occupation: Deputy Managing Director, TMF Luxembourg SA

Citizenship: The Netherlands

SUPERIOR LUXCO 3 S.à r.l.

MANAGERS (GÉRANTS)

Unless otherwise noted, the business address for each person listed below is 46A, Avenue J.F. Kennedy, Luxembourg, L-1855, Luxembourg.

Jack Mudde

Present Principal Occupation: Deputy Managing
Director, TMF Luxembourg SA

Citizenship: The Netherlands

Gwenaelle Cousin

Present Principal Occupation: Team
Leader, TMF Luxembourg SA

Citizenship: France

Joseph H.
Greenberg

Business Address: c/o Walgreens Boots Alliance, Inc., 108 Wilmot Road, Deerfield, Illinois 60015

Present Principal Occupation: Vice President, Global M&A-Legal, Walgreens Boots Alliance, Inc.

Citizenship: United States

SUPERIOR LUXCO 2 S.à r.l.

MANAGERS (GÉRANTS)

Unless otherwise noted, the business address for each person listed below is 46A, Avenue J.F. Kennedy, Luxembourg, L-1855, Luxembourg.

Gwenaelle Cousin

Present Principal Occupation: Team
Leader, TMF Luxembourg SA

Citizenship: France

Joseph H.
Greenberg

Business Address: c/o Walgreens Boots Alliance, Inc., 108 Wilmot Road, Deerfield, Illinois 60015

Present Principal Occupation: Vice President, Global M&A-Legal, Walgreens Boots Alliance, Inc.

Citizenship: United States

Jack Mudde

Present Principal Occupation: Deputy Managing Director, TMF Luxembourg SA

Citizenship: The Netherlands